1. Hot vinegar method
First, pour a cup of vinegar into the drain. Then, pour a pot of boiling water into the drain and let the water and vinegar mix together. This will create some chemical reaction that will soften the clogged material in the drain so that it can be easily flushed away.
2. Soda and Vinegar Method
Mix 1/2 cup of baking soda with 1/2 cup of vinegar and pour it down the drain. This will create a small chemical reaction that creates bubbles, which will flush the dirt out of the drain.
3. Vinegar and Baking Soda Method
Pour baking soda down the drain before pouring in the vinegar. Then, pour 1/2 cup of vinegar down the drain and let the vinegar and baking soda mix together. This mixture will act as a stain remover and odor eliminator, as well as unclogging the drain.
4. Vinegar and Salt Method
Pour 1/2 cup of salt into the drain and then 1/2 cup of vinegar. This will create some chemical reaction which will flush the dirt out of the drain.
To summarize, the several methods described above are relatively simple and easy to do, and the materials used are very common. However, it should be noted that vinegar is corrosive, so avoid using it in excess. In addition, these methods are not applicable to all cases, if you can not dredge also need to ask a professional to deal with.